Individual provider Active NPI

Michael Sloan Mackelvie, D.O.

  • Obstetrics & Gynecology Physician
  • Houston, TX
National Provider Identifier
1154748119
Registry record updated Jun 11, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
R6615 Issued in TX
Practice address
15655 Cypress Wood Medical Dr Ste 100
Houston, TX 77014-1487
Phone
(713) 442-1700
NPI assigned
Mar 27, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X R6615 TX Primary

Addresses

Primary practice location

15655 Cypress Wood Medical Dr Ste 100
Houston, TX 77014-1487

Mailing address

11511 Shadow Creek Pkwy
Pearland, TX 77584-7298
Phone (713) 442-0000

Other practice location 1

17198 St Lukes Way Ste 540
The Woodlands, TX 77384-8016
Phone (713) 442-1900

Other identifiers 3

IdentifierTypeStateIssuer
389401601MedicaidTX
389401602MedicaidTX
389401603MedicaidTX

Electronic endpoints 4

TypeEndpointUseAffiliation
Direct Messaging Address mmackelvie25599@direct.kelsey-seybold.com Direct
FHIR URL https://ssrx.ksnet.com/FhirProxy/api/FHIR/DSTU2/ Health Information Exchange (HIE)
FHIR URL https://ssrx.ksnet.com/FhirProxy/api/FHIR/DSTU2/ Health Information Exchange (HIE)
Direct Messaging Address mmackelvie25599@direct.kelsey-seybold.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20180821001529 TX Practitioner - Obstetrics/Gynecology 1456600600 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Other, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Obhg Texas Holdings PAGroup PAC ID 3577713072, 176 clinicians

Practice addresses (Care Compare)

17201 Interstate 45 S
The Woodlands, TX 77385-3311
Phone (800) 967-2289

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy, Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Kelsey-Seybold Medical Group, PLLC Obstetrics & Gynecology CurrentSince Aug 6, 2018 Accepting new patients
Obhg Texas Holdings, P.a. Obstetrics & Gynecology CurrentSince Nov 25, 2025 Accepting new patients

Locations

1600 Wallace Blvd
Amarillo, TX 79106
Phone (806) 212-2000

12221 N Mopac Expy
Austin, TX 78758
Phone (512) 901-2530

2830 Calder St
Beaumont, TX 77702
Phone (409) 899-7000

5950 Saratoga Blvd
Corpus Christi, TX 78414
Phone (321) 917-9263

9440 Poppy Dr
Dallas, TX 75218
Phone (214) 324-6100

1400 8th Ave
Ft Worth, TX 76104
Phone (817) 922-1559

7600 Beechnut St
Houston, TX 77074
Phone (713) 456-5000

2727 W Holcombe Blvd
Houston, TX 77025
Phone (713) 790-9412

15655 Cypress Wood Medical Dr
Ste 100
Houston, TX 77014
Phone (713) 442-1700

7010 Highway 6
Missouri City, TX 77459
Phone (713) 442-4200

11511 Shadow Creek Pkwy
Pearland, TX 77584
Phone (713) 442-4997

2515 Business Center Dr
Pearland, TX 77584
Phone (713) 442-7200

106 Vision Park Blvd
Shenandoah, TX 77384
Phone (713) 442-1800

17201 Interstate 45 S
The Woodlands, TX 77385
Phone (936) 270-2000

17198 St Lukes Way
Ste 540
The Woodlands, TX 77384
Phone (713) 442-1900

Organizations & group practices 2

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1395878400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1623369600000",
    "number": "1154748119",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11511 SHADOW CREEK PKWY",
            "city": "PEARLAND",
            "state": "TX",
            "postal_code": "775847298",
            "telephone_number": "713-442-0000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15655 CYPRESS WOOD MEDICAL DR STE 100",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770141487",
            "telephone_number": "713-442-1700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "17198 St Lukes Way Ste 540",
            "address_purpose": "LOCATION",
            "city": "The Woodlands",
            "state": "TX",
            "postal_code": "773848016",
            "country_code": "US",
            "telephone_number": "713-442-1900",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MACKELVIE",
        "first_name": "MICHAEL",
        "middle_name": "SLOAN",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-03-27",
        "last_updated": "2021-06-11",
        "certification_date": "2021-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "TX",
            "license": "R6615",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "389401601",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "389401602",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "389401603",
            "state": "TX"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mmackelvie25599@direct.kelsey-seybold.com",
            "affiliation": "N",
            "endpointDescription": "digital contact information",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "17198 St Lukes Way Ste 540",
            "city": "The Woodlands",
            "state": "TX",
            "country_code": "US",
            "postal_code": "773848016",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://ssrx.ksnet.com/FhirProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FHIR endpoint URL",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "17198 St Lukes Way Ste 540",
            "city": "The Woodlands",
            "state": "TX",
            "country_code": "US",
            "postal_code": "773848016",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://ssrx.ksnet.com/FhirProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FHIR endpoint URL",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "15655 Cypress Wood Medical Dr Ste 100",
            "city": "Houston",
            "state": "TX",
            "country_code": "US",
            "postal_code": "770141487",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mmackelvie25599@direct.kelsey-seybold.com",
            "affiliation": "N",
            "endpointDescription": "digital contact information",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "15655 Cypress Wood Medical Dr Ste 100",
            "city": "Houston",
            "state": "TX",
            "country_code": "US",
            "postal_code": "770141487",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.